Re: [ovirt-users] Migrating hosts from RHEL6 to RHEL7
It is possible to migrate a VM from 6 to 7 it is recommended however that you don't do a live migration and that you power off the VM and then turn it back on on the cluster running version 7 "Groten, Ryan" <Ryan.Groten@stantec.com> wrote: Has anyone succeeded in upgrading their hosts OS version from 6 to 7? I assumed it could be done without downtime and one host at a time, but when trying it out I found that RHEL7 hosts can't be placed in the same Cluster as RHEL6 ones. I then tried making a new Cluster and migrating VMs from the RHEL6 cluster to RHEL7. Initial testing seems to show that it works from RHEL6 to RHEL7 but not the other way around. Also when I select this option a warning pops up saying "Choosing different cluster may lead to unexpected results. Please consult documentation." I looked in the Admin Guide and Technical Reference Guide but don't see where these unexpected results are mentioned. Thanks, Ryan Groten _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
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--_000_e83ab1cb04e04ce3ac58f17528265c8eCD1001M21corpads_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Thanks for the responses guys. Do we know why it's recommended to power th= e VMs off and then move them to the new cluster? Especially if live migrat= ion seems to work anyway. From: matthew lagoe [mailto:matthew.lagoe@subrigo.net] Sent: Thursday, August 20, 2015 3:25 PM To: Groten, Ryan Cc: users@ovirt.org Subject: Re: [ovirt-users] Migrating hosts from RHEL6 to RHEL7 It is possible to migrate a VM from 6 to 7 it is recommended however that y= ou don't do a live migration and that you power off the VM and then turn it= back on on the cluster running version 7 "Groten, Ryan" wrote: Has anyone succeeded in upgrading their hosts OS version from 6 to 7? I as= sumed it could be done without downtime and one host at a time, but when tr= ying it out I found that RHEL7 hosts can't be placed in the same Cluster as= RHEL6 ones. I then tried making a new Cluster and migrating VMs from the RHEL6 cluster = to RHEL7. Initial testing seems to show that it works from RHEL6 to RHEL7 = but not the other way around. Also when I select this option a warning pop= s up saying "Choosing different cluster may lead to unexpected results. Pl= ease consult documentation." I looked in the Admin Guide and Technical Reference Guide but don't see whe= re these unexpected results are mentioned. Thanks, Ryan Groten --_000_e83ab1cb04e04ce3ac58f17528265c8eCD1001M21corpads_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable <html xmlns:v=3D"urn:schemas-microsoft-com:vml" xmlns:o=3D"urn:schemas-micr= osoft-com:office:office" xmlns:w=3D"urn:schemas-microsoft-com:office:word" = xmlns:m=3D"http://schemas.microsoft.com/office/2004/12/omml" xmlns=3D"http:= //www.w3.org/TR/REC-html40"> <head> <meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dus-ascii"=
<meta name=3D"Generator" content=3D"Microsoft Word 14 (filtered medium)"> <style><!-- /* Font Definitions */ @font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4;} @font-face {font-family:Tahoma; panose-1:2 11 6 4 3 5 4 4 2 4;} @font-face {font-family:"Century Gothic"; panose-1:2 11 5 2 2 2 2 2 2 4;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {margin:0in; margin-bottom:.0001pt; font-size:12.0pt; font-family:"Times New Roman","serif";} a:link, span.MsoHyperlink {mso-style-priority:99; color:blue; text-decoration:underline;} a:visited, span.MsoHyperlinkFollowed {mso-style-priority:99; color:purple; text-decoration:underline;} span.EmailStyle17 {mso-style-type:personal; font-family:"Century Gothic","sans-serif"; color:windowtext;} span.EmailStyle18 {mso-style-type:personal-reply; font-family:"Century Gothic","sans-serif"; color:blue;} .MsoChpDefault {mso-style-type:export-only; font-family:"Calibri","sans-serif";} @page WordSection1 {size:8.5in 11.0in; margin:1.0in 1.0in 1.0in 1.0in;} div.WordSection1 {page:WordSection1;} --></style><!--[if gte mso 9]><xml> <o:shapedefaults v:ext=3D"edit" spidmax=3D"1026" /> </xml><![endif]--><!--[if gte mso 9]><xml> <o:shapelayout v:ext=3D"edit"> <o:idmap v:ext=3D"edit" data=3D"1" /> </o:shapelayout></xml><![endif]--> </head> <body lang=3D"EN-US" link=3D"blue" vlink=3D"purple"> <div class=3D"WordSection1"> <p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:"Ce= ntury Gothic","sans-serif";color:blue">Thanks for the respon= ses guys. Do we know why it’s recommended to power the VMs off = and then move them to the new cluster? Especially if live migration seems to work anyway.<o:p></o:p></span></p> <p class=3D"MsoNormal"><a name=3D"_MailEndCompose"><span style=3D"font-size= :10.0pt;font-family:"Century Gothic","sans-serif";color= :blue"><o:p> </o:p></span></a></p> <p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt;font-family:"= ;Tahoma","sans-serif"">From:</span></b><span style=3D"font-s= ize:10.0pt;font-family:"Tahoma","sans-serif""> matthew = lagoe [mailto:matthew.lagoe@subrigo.net] <br> <b>Sent:</b> Thursday, August 20, 2015 3:25 PM<br> <b>To:</b> Groten, Ryan<br> <b>Cc:</b> users@ovirt.org<br> <b>Subject:</b> Re: [ovirt-users] Migrating hosts from RHEL6 to RHEL7<o:p><= /o:p></span></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">It is possible to migrate a VM from 6 to 7 it is rec= ommended however that you don't do a live migration and that you power off = the VM and then turn it back on on the cluster running version 7 "Grot= en, Ryan" wrote: <o:p></o:p></p> <p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:"Ce= ntury Gothic","sans-serif"">Has anyone succeeded in upgradin= g their hosts OS version from 6 to 7? I assumed it could be done with= out downtime and one host at a time, but when trying it out I found that RHEL7 hosts can’t be placed in the same Cluster as RHEL6 = ones. </span> <o:p></o:p></p> <p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:"Ce= ntury Gothic","sans-serif"">I then tried making a new Cluste= r and migrating VMs from the RHEL6 cluster to RHEL7. Initial testing = seems to show that it works from RHEL6 to RHEL7 but not the other way around. Also when I select this option a warning pops up saying = “Choosing different cluster may lead to unexpected results. Ple= ase consult documentation.”</span><o:p></o:p></p> <p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:"Ce= ntury Gothic","sans-serif""> </span><o:p></o:p></p> <p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:"Ce= ntury Gothic","sans-serif"">I looked in the Admin Guide and = Technical Reference Guide but don’t see where these unexpected result= s are mentioned.</span><o:p></o:p></p> <p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:"Ce= ntury Gothic","sans-serif""> </span><o:p></o:p></p> <p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:"Ce= ntury Gothic","sans-serif"">Thanks,</span><o:p></o:p></p> <p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:"Ce= ntury Gothic","sans-serif"">Ryan Groten</span><o:p></o:p></p=
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participants (3)
-
Groten, Ryan -
matthew lagoe -
Soeren Malchow